Chosen Solution

You can edit or remove the folders on the Bookmarks Toolbar. For example, you can right-click (or Mac equivalent) to access Properties or Delete.

To move items, it's probably easier to use the Library dialog, also known as the Bookmarks Organizer.

Bookmarks > Show All Bookmarks

Here you can move items between the Bookmarks Toolbar and the main Bookmarks menu.

Does it work?

You can edit or remove the folders on the Bookmarks Toolbar. For example, you can right-click (or Mac equivalent) to access Properties or Delete.
To move items, it's probably easier to use the Library dialog, also known as the Bookmarks Organizer.
Bookmarks > Show All Bookmarks
Here you can move items between the Bookmarks Toolbar and the main Bookmarks menu.
Does it work?